KUZHEL, S. A. About dependence of the Lax-Phillips scattering matrix on choice of incoming and outgoing subspaces. Methods of Functional Analysis and Topology, [S. l.], v. 7, n. 1, p. 45–52, 2001. Disponível em: https://zen.imath.kiev.ua/index.php/mfat/article/view/138. Acesso em: 17 dec. 2025.